Questions about mmap

["Thiago Lacerda" <thiagotbl@gmail.com>]

Hi everyone,
I'd like to share a hashtable among kernel and userspace.
The hashtable resolves collision by chaining.
I have the following structure:

typedef struct flow_t flow_t;

struct flow_t {
   ...
   ...
   flow_t *next;
   flow_t *prev;
};

typedef struct hashtable {
   flow_t *hashBuckets[X]; // X is a natural number
   unsigned int size;
} Hastable;


So, my question is: Can I mmap the hashtable struct and access
directly from userspace? I'm afraid that this could turn on mess
because of the array of pointers.
If it's possible, does anyone know a piece of code that can match my
problem? I've been googling and I just find codes dealing with structs
itself, not pointers.

Best regards


--
Thiago de Barros Lacerda
Computer Science Undergraduate Student - CIn/UFPE - 2004.2
Researcher/Software Developer - GPRT - Networking and
Telecommunications Research Group